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information_for_astronomers:rx:s60mm
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information_for_astronomers:rx:s60mm [2013/03/12 14:09] 127.0.0.1 external edit |
information_for_astronomers:rx:s60mm [2023/12/18 22:10] (current) akraus |
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| ^ Frequency [GHz] ^ Channel ^ Polarisation ^ Tcal [K] ^ Tsys [K] ^ Sensitivity [K/Jy] ^ SEFD [Jy] ^ Aperture Eff. [%] ^ TMB/S [K/Jy] ^ Main Beam Eff. [%] ^ FWHM [arcsec] ^ Last update ^ | ^ Frequency [GHz] ^ Channel ^ Polarisation ^ Tcal [K] ^ Tsys [K] ^ Sensitivity [K/Jy] ^ SEFD [Jy] ^ Aperture Eff. [%] ^ TMB/S [K/Jy] ^ Main Beam Eff. [%] ^ FWHM [arcsec] ^ Last update ^ | ||
| - | |4.850 |A / B | LCP / RCP |1.8 |27 |1.55 |18 |53 |2.4 |63 |146 |June 2008| | + | |4.850 |A / B |LCP / RCP |1.8 |27 |1.55 |18 |53 |2.4 |63 |146 |June 2008| |
| ^ normalized Gain curve (G = A0 + A1·Elv + A2·Elv2)^^^ Observed in ^ confirmed ^ | ^ normalized Gain curve (G = A0 + A1·Elv + A2·Elv2)^^^ Observed in ^ confirmed ^ | ||
| - | |A0 = 0.97323|A1 = 1.2702E-3|A2 = -1.5059E-5|May 2004| | | + | |A0 = 0.9870|A1 = 8.692E-4|A2 = -1.453E-5|Aug 2023| | |
| - | |A0 = 0.995|A1 = 5.2022E-4|A2 = -1.27874e-05|Feb 2008| | | + | |
| **Comments:** | **Comments:** | ||
| * The values for LCP and RCP do not differ significantly. | * The values for LCP and RCP do not differ significantly. | ||
| - | * The new gain curve (Feb 2007) was corrected for opacity. | + | * The opacity is usually very small. Typical zenith tau values are < 0.01. |
| - | * If no other information about the opacity is available a typical zenith tau value of about 0.016 should do a good job. | + | |
| ==== Version description for OBSINP ==== | ==== Version description for OBSINP ==== | ||
| Line 62: | Line 60: | ||
| | 16 | VLBA | cross | Horn 1, sin AB | | | 16 | VLBA | cross | Horn 1, sin AB | | ||
| + | ==== Spectroscopy modes and resolution ==== | ||
| + | ^ BW ^ nchan ^ nu ^ Df ^ Dv ^ dv ^ | ||
| + | ^ MHz ^ ^ MHz ^ kHz ^ km/s ^ km/s ^ | ||
| + | | 100 | 32768 | 4600 | 3.1 | 0.199 | 0.231 | | ||
| + | | 100 | 32768 | 4700 | 3.1 | 0.195 | 0.226 | | ||
| + | | 100 | 32768 | 4800 | 3.1 | 0.191 | 0.221 | | ||
| + | | 100 | 32768 | 4900 | 3.1 | 0.187 | 0.217 | | ||
| + | | 100 | 32768 | 5000 | 3.1 | 0.183 | 0.212 | | ||
| + | | 100 | 32768 | 5100 | 3.1 | 0.179 | 0.208 | | ||
| + | | 500 | 32768 | 4600 | 15.3 | 0.994 | 1.154 | | ||
| + | | 500 | 32768 | 4700 | 15.3 | 0.973 | 1.129 | | ||
| + | | 500 | 32768 | 4800 | 15.3 | 0.953 | 1.105 | | ||
| + | | 500 | 32768 | 4900 | 15.3 | 0.934 | 1.083 | | ||
| + | | 500 | 32768 | 5000 | 15.3 | 0.915 | 1.061 | | ||
| + | | 500 | 32768 | 5100 | 15.3 | 0.897 | 1.040 | | ||
| + | BW ... band width\\ | ||
| + | nchan ... number of spectral channels\\ | ||
| + | nu ... center frequency\\ | ||
| + | Df ... Channel separation (in frequency)\\ | ||
| + | Dv ... Channel separation (in velocity)\\ | ||
| + | dv ... Velocity resolution (dv=1.16*Dv) | ||
| - | ==== Tcal and Tsys measurements ==== | ||
| - | {{:information_for_astronomers:rx:s60mm-xffts-tcal.png?900|Tcal}} | ||
| - | {{:information_for_astronomers:rx:s60mm-xffts-tsys.png?900|Tsys}} | + | ==== Tcal and Tsys measurements ==== |
| + | {{:information_for_astronomers:rx:s60mmb_tcal_from_specpointing_using_tau_spec.png?675 |}} | ||
| + | {{:information_for_astronomers:rx:s60mmb_tsys0_from_specpointing_using_tau_spec.png?675 |}} | ||
| + | {{:information_for_astronomers:rx:s60mmb_tau_from_specpointing_using_tau_spec.png?675 |}} | ||
| + | {{:information_for_astronomers:rx:s60mmb_hpbw_from_specpointing.png?675 |}} | ||
| - | {{:information_for_astronomers:rx:s60mm-xffts-trms.png?900|Trms}} | ||
information_for_astronomers/rx/s60mm.1363093752.txt.gz · Last modified: 2013/09/30 13:52 (external edit)
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